设 [tex=6.5x1.214]6m6IpLK9nxKlloS9uQjB0qJni044ihmKs30/YJo0lk0=[/tex] 是总体 [tex=0.857x1.0]KGogyvwDAIJf/iL0H/9wjg==[/tex] 的样本, [tex=8.143x1.429]8Aobq9hd0EasyariBaK/5+zNE4n9paMTx4AFXU5ijcQ=[/tex] 是样本均值, [tex=1.071x1.214]U3IZqDvTy5QsVHd4swj4cA==[/tex] 是样本方差，则 ( ).
未知类型：{'options': ['[tex=6.786x2.357]vRBX8AbaPg6QMKj9zVtmrXhZv3hdLM1JymjMQrKK778rRvUHkbeBfpNE3NVDGTiDtCTGJbbQQG9YqmPoXVWb9w==[/tex]；', '[tex=4.929x1.286]vPYOvIvti6Iq7KdfuziwU/p1GnPW0M4UJO6n+KrQX5LWyoKtTSfvwVjGLyw/6x+e[/tex]；', '[tex=9.643x2.143]v4Y3V42jv19gcb6k/oSVrt4ebSrF/nSse0sG1V0YourEy5yf2r/VfUO1pI0ZWY3KbqMm67heMoxeA7LHIrPRFQ==[/tex]；', '[tex=9.143x1.286]PdjyFPWpjZSPPDO5IgXVnFBx9CgAj1WV32QpgeWGx7cF71u3E/gUTAOxkNMWZQEXLsWbqHM5sgdjuTIYw0eX8g==[/tex]'], 'type': 102}
未知类型：{'options': ['[tex=6.786x2.357]vRBX8AbaPg6QMKj9zVtmrXhZv3hdLM1JymjMQrKK778rRvUHkbeBfpNE3NVDGTiDtCTGJbbQQG9YqmPoXVWb9w==[/tex]；', '[tex=4.929x1.286]vPYOvIvti6Iq7KdfuziwU/p1GnPW0M4UJO6n+KrQX5LWyoKtTSfvwVjGLyw/6x+e[/tex]；', '[tex=9.643x2.143]v4Y3V42jv19gcb6k/oSVrt4ebSrF/nSse0sG1V0YourEy5yf2r/VfUO1pI0ZWY3KbqMm67heMoxeA7LHIrPRFQ==[/tex]；', '[tex=9.143x1.286]PdjyFPWpjZSPPDO5IgXVnFBx9CgAj1WV32QpgeWGx7cF71u3E/gUTAOxkNMWZQEXLsWbqHM5sgdjuTIYw0eX8g==[/tex]'], 'type': 102}
举一反三
- >>>x= [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9]>>>print(x.sort()) 语句运行结果正确的是( )。 A: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10] B: [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9] C: [10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0] D: ['2', '4', '0', '6', '10', '7', '8', '3', '9', '1', '5']
- set1 = {x for x in range(10)} print(set1) 以上代码的运行结果为？ A: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} B: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10} C: {1, 2, 3, 4, 5, 6, 7, 8, 9} D: {1, 2, 3, 4, 5, 6, 7, 8, 9,10}
- 【计算题】5 ×8= 6×4= 7×7= 9×5= 2×3= 9 ×2= 8×9= 7×8= 5×5= 4×3= 5+8= 6 ×6= 3×7= 4×8= 9×3= 1 ×2= 9×9= 6×8= 8×0= 4×7=
- 【单选题】请用地点定桩法在4分钟内记忆数字。 4 0 1 3 6 3 5 1 9 8 8 9 7 2 9 3 0 9 5 3 1 7 7 5 2 3 3 0 5 0 1 4 1 3 8 3 5 7 9 7 (5.0分) A. 已背 B. 未背
- 以下程序段实现的输出是（）。for(i=0;i<;=9;i++)s[i]=i;for(i=9;i>;=0;i--)printf("%2d",s[i]);[/i][/i] A: 9 7 5 3 1 B: 1 3 5 7 9 C: 9 8 7 6 5 4 3 2 1 0 D: 0 1 2 3 4 5 6 7 8 9